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US 2014/0276837 A1Published application
Femoral orthopaedic instrument assembly for setting offset
AssigneeDepuy Ireland Unlimited Company
InventorsRebecca L. Chaney, Craig S. Tsukayama
Life of this patent
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Abstract
A number of orthopaedic surgical instruments for use in a surgical procedure to prepare a patient's femur to receive an orthopedic prosthesis. The tools include guide tools, cutting tools, surgical blocks, and other orthopaedic surgical instruments configured to plan and guide the preparation of the patient's femur. A method of using the orthopaedic surgical instruments is also disclosed.
Claims20
An orthopaedic surgical instrument assembly, comprising:
- a cutting block comprising:
- a base plate, and
- a pair of curved arms extending posteriorly from the base plate, each curved arm including a posterior surface and a cutting guide defined in the posterior surface,
- an intramedullary orthopaedic surgical instrument configured to be inserted into a medullary canal of a patient's femur, and
- an adaptor positioned in a slot defined in the base plate, the adaptor including (i) a mounting bracket engaged with the base plate, (ii) a first adaptor body coupled to the mounting bracket, and (iii) a second adaptor body pivotally coupled to the first adaptor body, the second adaptor body including a fastener coupled to the intramedullary orthopaedic surgical instrument,
- wherein (i) the first adaptor body defines a first axis, (ii) the intramedullary orthopaedic surgical instrument includes an elongated body that defines a second axis extending parallel to the first axis, and (iii) when the second adaptor body is pivoted relative to the first adaptor body, the elongated body is pivoted about the first axis.
3 more elements
An orthopaedic surgical instrument assembly, comprising:
- a mounting bracket including a main housing and a pair of arms extending outwardly from the main housing, each arm having a slot defined therein sized to receive a locking tab of a surgical block,
- a first body pivotally coupled to a proximal end of the main housing of the mounting bracket, the first body defining a first longitudinal axis,
- a second body pivotally coupled to a proximal end of the first body, the second body defining a second longitudinal axis extending parallel to the first longitudinal axis and being configured to be coupled to an orthopaedic intramedullary surgical instrument,
- wherein (i) the mounting bracket includes a distal surface that defines an imaginary plane, and (ii) an oblique angle is defined between the imaginary plane and the first longitudinal axis.
1 more element
An orthopaedic surgical instrument system, comprising:
- a surgical block including a locking tab,
- an adaptor configured to be positioned in a slot defined in the surgical block, the adaptor including (i) a mounting bracket configured to engage the locking tab to secure the adaptor to the surgical block, (ii) a first adaptor body coupled to the mounting bracket, the first adaptor body defining a first axis, and (iii) a second adaptor body pivotally coupled to the first adaptor body, the second adaptor body defining a second axis offset from and extending parallel to the first axis,
- an offset tool including (i) a first shaft that defines a third axis and (ii) a second shaft pivotally coupled to the first shaft, the second shaft defining a fourth axis offset from and extending parallel to the third axis, and
- a guide block configured to be positioned in the slot of the surgical block in place of the adaptor, the guide block including a mounting bracket configured to engage the locking tab to secure the guide block to the surgical block, and a cylindrical passageway defined therein sized to receive the first shaft of the offset tool,
- wherein (i) the second axis is offset from the first axis by a first distance, and (ii) the fourth axis offset from the third axis by a second distance equal to the first distance.
2 more elements
Dependencies are inferred from the claim text.